I need advice on negative feelings toward my dad?

First of all, I think you should kick him out. Kicking him out would be better for both of your lives. My house is also a mess, financially and mentally. My parents always have fights because my mom believes(it is true) that he's dating some fugly woman. If your dad keeps coming to your doorstep, call the police for harassment. Your dad shouldn't do things like that. You are already working hard for your family. I know you can succeed. <3